They are available on iTunes App Store for iPhone, iPad, or iPod Touch.
Zombie Shock [apple.com]Action/Adventure Game App for FREE(was $1.99)
ZombieShock is an action-adventure game set in New York City in turmoil. A wide variety of zombie characters, numerous weapons, and the endless zombie-chases invite you to the world of great suspense.
XSysInfo [apple.com] – Device Booster Info/Data Refresh App for $0.99(was $1.99)
Very highly rated. App can free up memory just touch refresh button on Usage screen or switch on “Clean memory at start” option in settings. Automatic update of information every several seconds including memory, data, network info, and more.
Download Back to the Future (part 1) for iPad for FREE until 31 July 2011.
The game is from Telltale, the guys who used to work @ Lucas Arts and took over the Monkey Island series, Sam n Max series etc.